Period 4, Catalan McNair, HIstory of Earth Timeline

Timeline created by 2013CatalaEr
  • (5 BYA) Solar System

    (5 BYA) Solar System
    Our solar syatem was swirling mass of gas and dust
  • (4.6 BYA) Earth Formed

    (4.6 BYA) Earth Formed
    The Earth began to form and grow by colliding with space debris.
  • (4 BYA) Radiometric Dating

    (4 BYA) Radiometric Dating
    Methods of establishing the age of materials.
  • (4 BYA) Atmosphere

    (4 BYA) Atmosphere
    Volcanoes emitted gas, forming an atmosphere.
  • (1 BYA) Ozone

    (1 BYA) Ozone
    Ozone(o3) formed- protected organisms from harmful UV rays so they could exist on land.
  • (3.5 BYA) Earth

    (3.5 BYA) Earth
    It took one-half billion years for Earth to form from a swirling mass of gases. Sometime after Earth formed, living organisms began to affect the atmosphere.
  • (3 BYA) Life

    (3 BYA) Life
    So form of life started to photosynthesize.
  • (2.2 BYA) Earth

    (2.2 BYA) Earth
    Earth started to appear just as much as it does today.
  • (2 BYA)o2

    (2 BYA)o2
    O2 levels reached todays levels.
  • (1.5 BYA) Life

    (1.5 BYA) Life
    Lives varied from a fraction to a second.
  • Thomas Chech(1947)

    Thomas Chech(1947)
    He found that a type RNA found in unicellular eukaryotes is able to act as a chemical catalyst.
  • Urey and Miller (1893-1981)

    Urey and Miller (1893-1981)
    Miler and Urey set up an experiment using Oparins hypothesis as a starting point.
  • Fox (1912-1988)

    Fox (1912-1988)
    Fox has done extensive research on the ohysical structures that may have given rise to the first cells.
  • Radiometeric Dating

    Radiometeric Dating
    Methods of establishing the age of materials include the techniques known as Radiometric Dating.
  • Lynn Margulis(1938)

    Lynn Margulis(1938)
    She proposed that early prokaryotic cells may have developed a mutually beneficial relationship.
  • First Microscopes (1626-1697)

    First Microscopes (1626-1697)
    revealed that the world wasteeming with tiny creatures
  • Redi's experiment (1626-1697)

    Redi's experiment (1626-1697)
    noticed and described the different development forms of flies
  • Spallanzani's experiment (1729-1799)

    Spallanzani's experiment (1729-1799)
    desighned an experiment to test the hypothesis of spontanius generations
  • Pasteur's experiment (1822-1895)

    Pasteur's experiment (1822-1895)
    pasteur set up a prize winning experiment to set up objections on to spollanzis experiment
  • Oparin's hypothesis(1894-1980)

    Oparin's hypothesis(1894-1980)
    they thought that the atmosphere contained ammonia